Packing-incasing ferrule.



P. MUELLER & A. G. SGHUERMANN. PACKING INGASING FERRULE. APPLICATION FILED MAY 6. 191s,

1y l 1 6,609, Patented NOX/.10,1914l mg .m Mm

' otherwise, and the till litt

limllil? MUELJLER im ANTON C.

SHUEIRMANN, 0F DEGATUM, FLLINUXS, .llSSIGrNORl 'TCU H. MUELLER MFG. C0., UF MECATUR, lIlLl'JINOIS,

all. CORPORATXUN 0F XLLINOIS.

@adCKNG-INCASING FIERRULE.

il,ililtl,6.

wltatented Non. iid, tutti.

.application nled May 6, i913. Serial No. 765,@69.

lb all whom it may concern vlie it known that we, Piiinir ll/lunnnnn and Auron@ SOHUERMANN, citizens oit the United States, residing at Decatur, in the county of Macon and State ot llllinois, have invented new and useful improvements in lJacking-llncasing Ferrules, of which the following is a specification.

ylFhis invention relates to pipe couplings wherein a packing .is employed tor sealing the pipes ot the couplings, and has particular reference to a packing retaining terrule itor use in connection with the coupling.

.Considerable diliculty has been experienced in the use ot pipe couplings, in which packings are employed, packings in their proper places when the coupling is assembled and ,whenuid under.

pressure is passed through the coupling. The usual coupling nutcompresses the packing against the pipes and into the space between the pipes, whether telescoping or fluid passing through the coupling crumbles, breaks oli', and carries away such parts of the packing as are forced into this space. Then also when a building settles, `and more especially when vibration in water pipes is caused by the quick closing ot `a faucet, by. water-hammer or shaking ot doors, the packing becomes weakened and loosens and seeks the path of least resistance, Awhich is toward the service pipes. 'lhis condition 4loosens the packing and produces a leaky coupling, or, upon the tightening up of the coupling nutte compress the vpacking further into the space, wears outthe packing in a very short ftiine, since the huid under pressure further attacks ythe newly exposed portions ot the packing.

'llo overcome ythese didiculties; to produce a 'coupling which will last '-a relatively long time, and to produce a coupling which is not subject to leakage, vis the principal object ot this invention. llt has been tound in lpractice that this invention does overcome these dii'- i'lculties, and by the employment oit a very simple and economical device which rinay be introduced into the coupling without altering or changing the latter in any respect.

'Broadly, this invention comprises a iter- `iuile `adapted :tor positioning between the ends cit the pipes to cover the space lett between the pipes, so .thatthe packing, which in maintaining the embracing the coupling nut when tightened. As will be hereinafter pointed out, this retaining terri/ile may comprise simply a tlat disk, the disk may have project-ions engaging the pipes to hold and center the disk in the coupling, or it inay torni particularly adapting it to the coupling to which it is to be applied.

@ther objects and advantages will appear trom the following specification ot the presi entembodiment ot the invention disclosed in the annexed drawing.

ln thedrawing: Figure l is a longitudinal section through a coupling having a terrule of this invention applied thereto. 1Fig. 2 is a similar view of a slightly different forni of coupling having the t'eirule yapplied to the same. lig. 3 is a sectional view of the coupling ot lFig. 1, showing a slightly modified form o ferrule applied thereto. Fig. 4 is a similar view ot another form of coupling, and 'having another slightly modi` :tiedV form of Jferrule applied to the same.

Referring to the drawing, in which similar characters of .reference designate like have any other Adesired parts throughout the several views, and reiterring particularly to designate a pair together fby a couplingnut 12. The coupling nut 12 is threaded upon the end of the pipe. 11', and surrounds the other pipe 10 near its end, since the pipe 10 telescopes into the pipe ll, and compresses a packing 13, snugly the pipe l0, against the end of the pipe il. 'llhis torni ot coupling is the Fig. l, 10 and 1l usual slip-.joint coupling, and it will be understood that this invention is applicable to all 'ilorrns ot couplings, and is not restricted to the conventional showing in the accompanying drawing.

lin Fig. l ot the drawing the device or terrule oit this invention :is disclosed in the torni ot a disk .la abutting the end ot the pipe 1l and iitling, at its inner edge, closely against the outer surtace oit the pipe l0. The packing 'i3 rests against the louter Atace ot the disk "le, and is held thereto and coinpressed thereagainst by the coupling nut l2. This arrangement completely closes the annular space between the pipes and prevents the packing` V'i3 trono entering such space. ln this instance the disk .le is disclosed as being provided .with a sleeve l5 :snugly :embracing the piped() and extendingiintotlie space `between the pipesv 10 and ot pipes suitably secured' l() and ll i ico i ferrul e 14a 11 for the purpose of maintaining-the disk 14 in position.

In Fig. 2 of the drawing the pipe 10a has an outturned flange 16 at its end which is positively engaged by the coupling nut 12 and held against the end of the pipe 11 thereby. The packing 13 is interposed between the flange 16 and the end of the pipe 11. When used in connection with this slightly different coupling, the ferrule'or disk 14, is placed, in a similar manner against the end of the pipe 11 between the same and the packing 13, but the sleeve 15 is inserted into the end of the pipe 10EL in which the sleeve 15 tightly lits. With this arrangement, when the coupling nut 12 is tightened upon the pipe 11 it draws the pipe 10a and flange 16 toward the pipe 11, compressing the packing 13 between the flange 16 and the end of the pipe 11, the ferrule 14 holds the packing 13 from spreading into the pipe 11, and the sleeve 15 prevents the packing 13 from spreading down between the flange 16 and the end of the pipe 11 and from entering the pipe 10a.

In Fig. 3 of the drawing is disclosed a slight modification in the structure of ferrule connected to a slip-joint coupling, such as disclosed in Fig. 1. In this Fig. 3 the packing 13 is interposed between a pair of packing retaining ferrules 14a and 141. The appears against the end of the pipe 11 between the same and the pac-king 13, and surrounds the pipe 10 about which it snugly lits. Instead of having a projection or sleeve 15, the ferrule 14El has its inner edge thickened thereby providing a projecting portion 15a snugly embracing the pipe 10 and projecting into the space between the two pipes l0 and 11. By providing this projection 15a the ferrule 14a is given wedge form whereby it binds tightly between the pipes 10 and-11 and efl'ectually closes the space. The harder the coupling nut 12 is tightened, the harder the packing ring 13 presses against the ferrule 14a and wedges the latter into the space between the pipes, so that the retaining of the packing 13 in its true position and out of the space is insured. The ferrule 14b comprises merely a disk, as disclosed at 14 in Figs. 1 and 2, and is not provided with a projection. The ferrule 14b rests against the inturned flange of the coupling nut 12 and is carried thereby toward the pipe 11 when the coupling nut 12 is tightened thereon. The ferrule 14h fits closely about the pipe 10, prevents the packing 13 from spreading outwardly between the coupling nut 12 and the pipe 10. and serves as a friction ring between the packing 13 and coupling nut 12 so that the nut 12 cannot cut the packing into small pieces.

In Fig. 4 of the drawing the slightlydifferent form .of-- coupling shown lwherein Vthe end of the pipe 11.

the-pipe 10b is slightly thickened at its lend and provided with a counterbore 17 in which is snugly fitted the sleeve 15 of the packing retaining ferrule, and wherein the sleeve 15 does not interrupt or reduce the internal diameter of the pipe 10b. The pipe 10b has the flange 16 at its end coperating with the coupling nut 12 to hold the pipe 10b to the end of the pipe 11. The packing 13 is Vlocated between the flange 16 and the end of the pipe 11. The packing retaining ferrule 14c is of the same form as the ferrule or disk 14 of Figs. 1 and 2, and is forced into the end of the pipe 11 instead of bearing directly against the extremity of the same. This ferrule 14c has not only the projection or sleeve 15, but is also provided with a second sleeve or projection 18 extending oppositely from the sleeve 15 and from the outer edge of the disk 14c and decreasing in diameter from the disk 14c to its outer end. The sleeve 18 thus tapers toward its outer end and is provided with ay number of longitudinal slits 19 dividing the sleeve 18 into a number of yieldable fingers.

In positioning the ferrule 14C the tapering sleeve 18 is inserted in the end of' the pipe 11 and is forced into the same until the ferrule 14c is wholly or partially within The sleeve 18 yieldingly binds in the pipe 11 in proportion to the variations in diameters of the pipes l0b and 11 and thus holds the ferrule in place. 'Ihe sleeve 15 is forced into the counterbore 17 of the pipe 10b and centers the pipe in the coupling. The packing 13 is held in place between the flange 16, the end of the pipe 11 and the ferrule 14c and the sleeve 15, so that the packing 13 cannot expand into either of the pipes 10b or 11.

The coupling nuts 12 are bored, so that when they are tightly screwed onto the service pipes their openings through which the supply pipes extend are concentric with the openings of the service pipe. In view ofthis fact, since the supply pipes extend through the openings in the coupling nuts, the supply pipes have their outer peripheries concentric with the inner openings of the service pipes. Since the disks 14 and sleeves 15 are slipped over the ends of the supply pipes, when the supply pipes are placed through the coupling nuts, and the coupling nuts are screwed tightly onto the service pipes, the disks 14 and sleeves 15 are also concentric with the service pipes. The fact, that the outer diameter of the disks 14 is slightly larger than the internal diameter of the service pipes, permits the disks 14, since they .are located concentri-- cally with reference to the service pipes, to rest but a very short distance upon the service. .pipes 11, l permitting the packing proper, to form a complete fluid tight joint between. the.couphngnuts,;supplypipes and' ing in position.

the service pipes, without working into or being pressed downwardly into the space between the service and supply pipes. The function of the errule is to retain the pack The ferrule or disk let and sleeve l5, together with the end of the service pipe, the walls of the supply pipe and the coupling nut, incase the pacln so that a fluid tight joint must be forme This inventlon is not limited to the specilic showing above set forth for the purpose of illustration, but contemplates a device for holding the packing in place in any form of coupling.,

What we claim is:

l. ln combination with a slip joint com prising a pair of telescoping pipes, a cou pling nut joining the pipes and a packing in the coupling nut, of a packing incasing fer rule carried upon the inner pipe'v and engaging the end of the outer pipe whereby to confine the packing in the coupling nut and prevent the packing from spreading into the pipes 2. ln combination with a pair of telescoping pipes, a coupling nut joining said pipes, and a packin rounding the inner pipe an engaging the end of the outer pipe, of a sleeve sli ably mounted on the inner pipe and having an outturned ange for enga ement between said packing and the end o the larger pipe whereby to engage said packing between the pipes and the coupling nut and the flange.

3. In combination with a pair of telescoping pipes, of a coupling nut joining the pipes, and a packing in the coupling nut, of a sleeve on the inner pipe having an outstanding lange engaging against the outer pipe, said coupling nut being adapted to be tightened whereby to compress said packing between the flange and the couplingl nut.

In testimony whereof We have ereunto in saidA cou ling nut surset our hands in presence of two subscribing witnesses.

PHILIP MUELLER.

ANTON C. SCHUERMANN.

Witnesses: LEONARD Fu McKIanN,

CATHERINE E. McKnowN. 

